Analyses showed a worse NRI for CKD-EPI compared to CG (-7.9%, 95% CI: -15.6–0.1%, p = 0.0477), a non-significant NRI for FAS compared to CG (3.5%, 95% CI: -2.2–9.2%, NS) and a better NRI for FAS compared to CKD-EPI (11.7%, 95% CI: 4.5–18.8%, p = 0.0014). This evidence concerns the gene FAS and chronic kidney disease.